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Cybersecurity watch

OpenCode Flaw Lets Malicious MCP Servers Execute Code During Sign-In on Windows and WSL

The Hacker News

Why it matters

This page references a cybersecurity signal published by The Hacker News. It helps CISOs, DPOs, IT leaders, infrastructure teams, SMBs and enterprise accounts track vulnerabilities, alerts and trends that may affect security, compliance or system resilience.

Unix Consulting read

This signal relates to AI usage, assistants, models or data handled by these systems. It should be read through a governance lens: which data enters the tool, which access is granted and which traces remain auditable.

Watch points

  • Sensitive data sent to AI tools
  • Connectors, permissions and access logs
  • Internal rules for assistants, agents and local LLMs

Recommended action

Review handled data, connectors and available logs before authorizing or expanding the AI usage concerned.

Relevant for

DPOs, CISOs, IT leaders, innovation teams, exposed business units and AI compliance owners.

Source summary

A flaw in the OpenCode AI coding agent allowed a malicious or hijacked MCP server to run code on a developer's Windows or WSL machine when the developer signed in. OpenCode connects to MCP (Model Context Protocol) servers to add outside tools, and such code would run with the developer's own access. Anomaly, the company behind OpenCode, fixed the flaw in...

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